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Knowledge Cats Dirty Minds
Chairs Stairs Shadows

Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Rainbows are illusions

Types of Optical Illusions

Bezold effect fabric

Bezold Effect

The Dress blue black white gold

Color Constancy Illusions

Knees and toes

Knees and toes sexy illusion ad campaign

Credit: McCann Worldgroup

This ad campaign titled ‘Knees’ was published in Thailand in February, 2010. It was created for Boots Body Cream, by ad agency McCann. 

The ‘boobs’ are a sexy illusion created by knees and toes.

More optical illusions:

Flying through the woods
Live Wallpaper
The Pensive Olive Tree
Impossible woodwork
110 pound squirrel
The same image
Parquet Floor
Boiling a bird
  • Pareidolia
  • Physical illusions
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boobs or knee

Boobs or knee?

a dirty mind

Mammogram ad bald men illusion

Mammogram

a dirty mind